Why all my numpad don't work?
The number pad hot keys still work in 2.8. Have you remembered to re-apply emulate numpad in system preferences, because it is a new version of blender so the settings will be set to default (I made that mistake myself :) Also you can use the button next to the 1 to switch through lots of different views in 2.8. I think that may have been mentioned in the above answers. Hope I could have been of some help!